"""
Case Type   : 操作系统类-文件系统故障
Case Name   : gs_dump备份/gs_restore恢复时，注入故障系统文件句柄耗尽
Create At   : 2021/8/3
Owner       : li-xin12345
Description :
    1、注入文件系统系统文件句柄耗尽故障
    2、启线程执行gs_dump备份
    3、清理故障，再次执行gs_dump备份
    4、注入文件系统系统文件句柄耗尽故障
    5、启线程执行gs_restore恢复
    6、清理故障，再次执行gs_restore恢复
    7、运行TPCC
    8、检查数据一致性
    9、恢复环境
Expect      :
    1、故障注入成功
    2、gs_dump报错“Too many open files”
    3、清理故障成功，gs_dump备份成功
    4、故障注入成功
    5、gs_restore恢复报错“Too many open files”
    6、清理故障成功，gs_restore恢复成功
    7、运行TPCC成功
    8、数据一致
    9、恢复环境
History     :
"""
import os
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.CommonSH import RestartDbCluster
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node, macro


class ReliabilityFileSystem(unittest.TestCase):
    nodes = ("PrimaryDbUser", "Standby1DbUser", "Standby2DbUser")

    @RestartDbCluster(*nodes)
    def setUp(self):
        self.log = Logger()
        self.primary_node = Node(self.nodes[0])
        self.primary_sh = CommonSH(self.nodes[0])
        self.primary_root_node = Node(node="PrimaryRoot")
        self.constant = Constant()
        self.com = Common()
        self.log.info("setUp-实例化:ok")

        self.log.info("Opengauss_Reliability_OS_File_System_Case048:开始执行")
        self.log.info("创建备份文件夹")
        self.backup_path = os.path.join(os.path.join(
            os.path.dirname(macro.DB_INSTANCE_PATH)),
            "dump_dir")
        result = self.com.get_sh_result(self.primary_node,
                                        f"rm -rf {self.backup_path};"
                                        f"mkdir {self.backup_path}")
        self.log.info(result)
        
        self.backup_file = f"{macro.backup_path}/backup.tar"
        self.inject_cmd = f"rfile_deplenish (timeout) values (300)"

    def test_main(self):
        try:
            text = "--step1:主节点注入句柄耗尽故障;expect:成功"
            self.log.info("注入故障")
            session1 = ComThread(self.com.cfe_inject,
                                args=(self.primary_root_node,
                                      self.inject_cmd))
            session1.setDaemon(True)
            session1.start()
            time.sleep(1)

            text = "--step2：执行gs_dump备份;expect:成功"
            self.log.info(text)
            self.log.info("启线程创建指定实例的备份")
            session2 = ComThread(self.com.get_sh_result,
                                args=(self.primary_node,
                                      f"source {macro.DB_ENV_PATH};"
                                      f"gs_dump postgres "
                                      f"-U {self.primary_node.db_name} "
                                      f"-W {self.primary_node.db_password} "
                                      f"-f {self.backup_file} "
                                      f"-p {self.primary_node.db_port} "
                                      f" -F p"))
            session2.setDaemon(True)
            session2.start()

            self.log.info("gs_dump备份结果")
            session2.join(30)
            result = session2.get_result()
            self.log.info(result)

            self.assertNotIn("total time", result, "执行失败" + text)
            self.assertIn(self.constant.TOO_MANYY_FILE_MSG, result,
                          "执行失败" + text)

            self.log.info("故障注入结果")
            session1.join(30)
            result = session1.get_result()
            self.log.info(result)
            self.assertIn("successful execution", result, "执行失败" + text)

        finally:
            text = "--step3:清除故障;expect:成功"
            for i in range(5):
                result = self.com.cfe_query(self.primary_root_node,
                                            "rfile_deplenish")
                self.log.info(result)
                if self.constant.TOO_MANYY_FILE_MSG in result:
                    time.sleep(60)
                else:
                    break
            result = self.com.cfe_query(self.primary_root_node,
                                        "rfile_deplenish")
            self.log.info(result)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

            self.log.info("清理备份路径")
            result = self.com.get_sh_result(self.primary_node,
                                            f"rm -rf {self.backup_path};"
                                            f"mkdir {self.backup_path}")
            self.log.info(result)
            self.assertNotIn("bash", result, "执行失败" + text)

            text = "--step4:再次创建指定实例的备份;expect:成功"
            self.log.info(text)
            res = self.com.get_sh_result(self.primary_node,
                                         f"source {macro.DB_ENV_PATH};"
                                         f"gs_dump postgres "
                                         f"-U {self.primary_node.db_name} "
                                         f"-W {self.primary_node.db_password} "
                                         f"-f {self.backup_file} "
                                         f"-p {self.primary_node.db_port} "
                                         f" -F p")
            self.log.info(res)
            self.assertIn("total time", res)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, res)

        self.log.info("gs_dump备份测试结束 开始恢复测试")

        try:
            text = "--step5:主节点注入句柄耗尽故障;expect:成功"
            self.log.info("注入故障")
            session1 = ComThread(self.com.cfe_inject,
                                args=(self.primary_root_node,
                                      self.inject_cmd))
            session1.setDaemon(True)
            session1.start()
            time.sleep(1)

            text = "--step5：执行gs_restore恢复;expect:成功"
            self.log.info(text)
            self.log.info("启线程gs_restore恢复")
            session2 = ComThread(self.com.get_sh_result,
                                 args=(self.primary_node,
                                       f"source {macro.DB_ENV_PATH};"
                                       f"gs_restore -d postgres "
                                       f"{self.backup_file} "
                                       f"-p {self.primary_node.db_port}"))
            session2.setDaemon(True)
            session2.start()
            time.sleep(2)

            self.log.info("gs_restore恢复备份结果")
            session2.join(30)
            result = session2.get_result()
            self.log.info(result)
            self.assertNotIn("total time", result, "执行失败" + text)
            self.assertIn(self.constant.TOO_MANYY_FILE_MSG, result,
                          "执行失败" + text)

            self.log.info("故障注入结果")
            session1.join(30)
            result = session1.get_result()
            self.log.info(result)
            self.assertIn("successful execution", result, "执行失败" + text)

        finally:
            text = "--step6:清除故障;expect:成功"
            for i in range(5):
                result = self.com.cfe_query(self.primary_root_node,
                                            "rfile_deplenish")
                self.log.info(result)
                if self.constant.TOO_MANYY_FILE_MSG in result:
                    time.sleep(60)
                else:
                    break
            result = self.com.cfe_query(self.primary_root_node,
                                        "rfile_deplenish")
            self.log.info(result)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                             "执行失败" + text)

            text = "--step6:再次gs_restore恢复;expect:成功"
            self.log.info(text)
            res = self.com.get_sh_result(self.primary_node,
                                         f"source {macro.DB_ENV_PATH};"
                                         f"gs_restore -d postgres "
                                         f"{self.backup_file} "
                                         f"-p {self.primary_node.db_port}")
            self.log.info(res)
            self.assertIn("total time", res)
            self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, res)

        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        self.assertTrue("Degraded" in db_status or "Normal" in db_status)

        text = "--step7:运行TPCC;expect:成功"
        result = self.com.startTPCC(self.primary_root_node, macro.TPCC_PATH)
        self.log.info(result)
        self.assertIn(self.constant.TPCC_SUCCESS_MSG, result, "执行失败" + text)

        self.log.info("检查主备是否同步")
        time.sleep(10)
        self.log.info("获取节点数量")
        node_num = self.primary_sh.get_node_num()
        res = self.primary_sh.check_location_consistency("primary", node_num)
        self.assertTrue(res, "执行失败" + text)

        text = "--step8:检查数据一致性;expect:成功"
        nodes = (Node(self.nodes[0]), Node(self.nodes[1]),
                 Node(self.nodes[2]))
        flag = self.com.check_data_sample_by_all(r'\d', *nodes)
        self.assertTrue(flag, "执行失败" + text)
        table_dict = self.com.format_sql_result(
            self.primary_sh.executDbSql(r'\d'))
        table_name = table_dict.get('Name')
        for name in table_name:
            select_sql = f"select count(*) from {name};"
            flag = self.com.check_data_sample_by_all(select_sql, *nodes)
            self.assertTrue(flag, "执行失败" + text)

    def tearDown(self):
        text = "--step9:环境清理;expect:成功"
        result = self.com.cfe_query(self.primary_root_node,
                                    "rfile_deplenish")
        self.log.info(result)
        if self.constant.TOO_MANYY_FILE_MSG in result:
            time.sleep(300)

        self.log.info("删除相关文件夹")
        result = self.com.get_sh_result(self.primary_node,
                                        f"rm -rf {self.backup_path}")
        self.log.info(result)
        result = Node(self.nodes[0]).sh("date").result()
        self.assertNotIn(self.constant.TOO_MANYY_FILE_MSG, result,
                         "执行失败" + text)
        self.log.info("故障已清理")
        self.log.info("Opengauss_Reliability_OS_File_System_Case048:执行完成")